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Add Australia's 10% GST to a price, or work out the GST already included in a total. Tool page

GET https://digitalgreenhouse.com.au/api/tools/gst-calculator?amount=110&mode=remove

• amount — number, required. The amount in AUD. "$1,100" style input is accepted.
• mode — string, one of add | remove, default add. add = the amount excludes GST; remove = the amount already includes GST.

Check an Australian Business Number (11 digits) or Australian Company Number (9 digits) against its official checksum. Spaces and punctuation are ignored. Tool page

GET https://digitalgreenhouse.com.au/api/tools/abn-validator?number=51824753556

• number — string, required. The ABN or ACN. Also accepted as abn, acn.

The due date for an invoice from its payment terms (net days, days after end of month, a day of the following month, business days, or on receipt), moved off weekends and Australian public holidays for the chosen state or territory. Only full-day statewide public holidays count. Tool page

GET https://digitalgreenhouse.com.au/api/tools/invoice-due-date?date=2026-11-27&terms=net

• date — string, required. Invoice date, YYYY-MM-DD. Also accepted as invoice_date.
• terms — string, one of net | eom | following | business | receipt, default net. net = days after the invoice date; eom = days after the end of the invoice month; following = a day of the following month (set day); business = business days after the invoice date; receipt = due on the invoice date.
• days — integer, default 30. Number of days for net, eom and business terms.
• day — integer, default 20. Day of the following month for "following" terms (clamped to the month's length).
• state — string, one of nsw | vic | qld | wa | sa | tas | act | nt | national, default nsw. Whose public holidays to skip: nsw, vic, qld, wa, sa, tas, act, nt, or national (only the holidays every state shares).
• roll — string, one of next | previous | none, default next. If the due date lands on a weekend or public holiday: move to the next business day, the previous one, or leave it.
• holidays — boolean, default true. false = skip weekends only.
• today — string, optional. Date to count "days from today" from, YYYY-MM-DD. Defaults to today in Australia/Sydney. Also accepted as on.

Live A, AAAA, CNAME, MX, TXT, NS, SOA and CAA records for a domain, with plain-English notes and the DNSSEC status. Resolved over DNS-over-HTTPS (Cloudflare, falling back to Google). Tool page

GET https://digitalgreenhouse.com.au/api/tools/dns-lookup?domain=digitalgreenhouse.com.au&type=MX%2CTXT

• domain — string, required. Domain name. A URL or email address also works; the host part is used. Also accepted as d, name.
• type — string, default all. Record type(s), comma-separated: A, AAAA, CNAME, MX, TXT, NS, SOA, CAA, or all.

Who a domain is registered with, when it was registered and expires, its status codes in plain English, nameservers and DNSSEC, straight from the registry over RDAP (the modern replacement for WHOIS). .au domains also show the registrant and eligibility the .au registry publishes. A 404-style "registered": false means the registry has no such domain. One domain per request; registries do not allow bulk harvesting. Tool page

GET https://digitalgreenhouse.com.au/api/tools/whois-lookup?domain=digitalgreenhouse.com.au

• domain — string, required. Domain name. A URL, email address or subdomain also works; the registered domain is looked up. Also accepted as d, name.

Checks a domain's email setup: MX servers (and whether they resolve), SPF (following every include and counting DNS lookups against the limit of 10), DKIM under 23 common selectors (or yours) with RSA key length, and DMARC policy. Returns a verdict and a plain-English list of what to fix, with copy-paste records. Tool page

GET https://digitalgreenhouse.com.au/api/tools/mx-email-check?domain=digitalgreenhouse.com.au&selector=selector1

• domain — string, required. Domain name. A URL or email address also works. Also accepted as d.
• selector — string, optional. Optional DKIM selector to check as well as the common ones (the s= value in a DKIM-Signature header). Also accepted as s.

Network, broadcast, netmask, wildcard, host range and usable host count for an IPv4 CIDR block. Tool page

GET https://digitalgreenhouse.com.au/api/tools/subnet-calculator?cidr=192.168.10.37%2F26

• cidr — string, required. IPv4 address with prefix length.

The public IP address the request came from, and its reverse DNS name. Called by an agent, this is the agent's own server address. Tool page

GET https://digitalgreenhouse.com.au/api/tools/whats-my-ip

No parameters.

From two numbers x and y: x% of y, x as a percentage of y, and the percentage change from x to y. Tool page

GET https://digitalgreenhouse.com.au/api/tools/percentage-calculator?x=15&y=80

• x — number, required. First number.
• y — number, required. Second number.

Sale price and saving after a percentage discount, with an optional stacked "extra % off". Tool page

GET https://digitalgreenhouse.com.au/api/tools/discount-calculator?price=249.95&discount=30

• price — number, required. Original price.
• discount — number, required. Percentage off.
• extra — number, optional. Optional further percentage off the already-reduced price.

Monthly repayment, total repaid and total interest for a fixed-rate loan (standard amortisation, monthly compounding). Tool page

GET https://digitalgreenhouse.com.au/api/tools/loan-calculator?amount=35000&rate=8.5&years=5

• amount — number, required. Amount borrowed. Also accepted as principal.
• rate — number, required. Annual interest rate in percent.
• years — number, required. Loan term in years (decimals allowed). Also accepted as term.

Split a bill between people, with an optional tip percentage. Each share is rounded up to the cent. Tool page

GET https://digitalgreenhouse.com.au/api/tools/bill-splitter?total=187.40&people=4

• total — number, required. Bill total. Also accepted as amount, bill.
• people — integer, required. Number of people.
• tip — number, default 0. Tip percentage.

Body Mass Index and its standard category, from metric or imperial measurements. Screening number only, not medical advice. Tool page

GET https://digitalgreenhouse.com.au/api/tools/bmi-calculator?weight_kg=72&height_cm=178

• weight_kg — number, optional. Weight in kilograms (metric).
• height_cm — number, optional. Height in centimetres (metric).
• weight_lb — number, optional. Weight in pounds (imperial).
• height_ft — number, optional. Height, feet part (imperial).
• height_in — number, optional. Height, inches part (imperial).

Exact age in years, months and days on a date (default today in Sydney), plus totals and days until the next birthday. Also works as a date-difference calculator. Tool page

GET https://digitalgreenhouse.com.au/api/tools/age-calculator?dob=1990-02-28&on=2026-10-02

• dob — string, required. Date of birth (or start date), YYYY-MM-DD. Also accepted as from, birthdate.
• on — string, optional. Date to measure to, YYYY-MM-DD. Defaults to today in Australia/Sydney. Also accepted as to.

Convert length, weight, volume (US measures), area, speed and temperature. Units: m km cm mm mi yd ft in · kg g mg t lb oz st · L mL gal qt pt cup floz · m2 km2 ha ft2 acre · m/s km/h mph kn · C F K (common names like "pounds" or "celsius" also work). Tool page

GET https://digitalgreenhouse.com.au/api/tools/unit-converter?value=26.2&from=mi&to=km

• value — number, required. The number to convert.
• from — string, required. Unit to convert from.
• to — string, required. Unit to convert to.

Convert a Unix timestamp (seconds or milliseconds) to UTC, ISO 8601 and Sydney time (AEST/AEDT), or a date to a timestamp. With neither, returns the current time. Tool page

GET https://digitalgreenhouse.com.au/api/tools/epoch-converter?timestamp=1759363200

• timestamp — string, optional. Unix timestamp in seconds or milliseconds. Also accepted as ts.
• unit — string, one of auto | s | ms, default auto. auto treats 13+ digits as milliseconds.
• date — string, optional. A date/time to convert to a timestamp, ideally ISO 8601 (2026-10-02T09:30:00+10:00). Without an offset it is read in tz.
• tz — string, default Australia/Sydney. IANA time zone for reading "date" and for an extra local-time view, e.g. Australia/Perth.

Encode UTF-8 text to Base64, or decode Base64 (standard or URL-safe) back to text. Binary results come back as hex. Tool page

GET https://digitalgreenhouse.com.au/api/tools/base64?text=Hello%2C%20Sydney%21&mode=encode

• text — string, required. Text to encode, or Base64 to decode.
• mode — string, one of encode | decode, default encode. encode or decode.
• urlsafe — boolean, default false. Use the URL-safe alphabet (- and _, no padding).

Percent-encode or decode text with exactly the rules of JavaScript's encodeURIComponent/decodeURIComponent (scope=component) or encodeURI/decodeURI (scope=full). Tool page

GET https://digitalgreenhouse.com.au/api/tools/url-encode?text=caf%C3%A9%20%26%20cake%3F&mode=encode

• text — string, required. Text to encode or decode.
• mode — string, one of encode | decode, default encode. encode or decode.
• scope — string, one of component | full, default component. component = one query value or path segment; full = a whole URL.

Escape & < > " ' as HTML entities (optionally every non-ASCII character too), or decode entities back to text. Tool page

GET https://digitalgreenhouse.com.au/api/tools/html-entity?text=%3Ca%20href%3D%22x%22%3ETom%20%26%20Jerry%3C%2Fa%3E

• text — string, required. Text to encode, or HTML with entities to decode.
• mode — string, one of encode | decode, default encode. encode or decode.
• all — boolean, default false. When encoding, also turn non-ASCII characters into numeric entities.

Translate text to International Morse code (ITU-R M.1677-1) or Morse back to text, with how long it takes to send at a given speed. Morse output separates letters with a space and words with " / "; input also accepts | or three spaces between words, and · − for dots and dashes. Prosigns go in angle brackets, e.g. <SOS>. Tool page

GET https://digitalgreenhouse.com.au/api/tools/morse-code?text=SOS%2C%20send%20help

• text — string, required. Text to encode, or Morse code to decode.
• mode — string, one of auto | encode | decode, default auto. auto decodes when the input is only dots, dashes and separators, and encodes anything else.
• wpm — integer, default 20. Character speed in words per minute (PARIS standard), used for the timing.
• farnsworth — integer, optional. Optional slower overall speed in wpm: letters stay at wpm and the gaps stretch (Farnsworth spacing).

Turn a title into a clean URL slug: accents stripped, anything that is not a letter or digit becomes the separator. Tool page

GET https://digitalgreenhouse.com.au/api/tools/slugify?text=Cr%C3%A8me%20br%C3%BBl%C3%A9e%3A%205%20tips%20for%202026%21

• text — string, required. The title or text.
• separator — string, one of - | _, default -. Hyphen or underscore.
• lowercase — boolean, default true. Lower-case the slug.

Convert text to lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE. Splits words on spaces, - _ and camel humps. Tool page

GET https://digitalgreenhouse.com.au/api/tools/text-case-converter?text=customer%20invoice%20ID&case=camel

• text — string, required. The text.
• case — string, one of all | lower | upper | title | sentence | camel | pascal | snake | kebab | constant, default all. One case, or all of them.

Validate JSON and point to the first error by line and column, or pretty-print / minify it. Send large documents as a POST body. Tool page

GET https://digitalgreenhouse.com.au/api/tools/json-formatter?text=%7B%22name%22%3A%20%22DG%22%2C%20%22tools%22%3A%2032%2C%7D

• text — string, required. The JSON text.
• mode — string, one of validate | format | minify, default validate. validate only, or also return formatted/minified output.
• indent — string, one of 2 | 4 | tab, default 2. Indent for mode=format.

Decode a JSON Web Token's header and payload and report expiry (exp), not-before (nbf) and issued-at (iat). The signature is NOT verified. POST only, so tokens never appear in URLs or server logs. Tool page

POST https://digitalgreenhouse.com.au/api/tools/jwt-decoder
Content-Type: application/json

{"token": "\u2026"}

• token — string, required. The JWT (header.payload.signature).

MD5, SHA-1, SHA-256, SHA-384 and SHA-512 of text (as UTF-8 bytes) or of hex/Base64 bytes, with an optional check against an expected hash. Use POST for anything sensitive. Tool page

GET https://digitalgreenhouse.com.au/api/tools/hash-generator?text=hello&algorithm=sha256

• text — string, required. The input.
• algorithm — string, one of all | md5 | sha1 | sha256 | sha384 | sha512, default all. One algorithm, or all.
• input_encoding — string, one of text | hex | base64, default text. How "text" is encoded: text = UTF-8 string; hex or base64 = raw bytes.
• expect — string, optional. Optional expected hash (hex) to compare against.

Generate random UUID v4, time-ordered UUID v7, or ULIDs, up to 100 at a time. Tool page

GET https://digitalgreenhouse.com.au/api/tools/uuid-generator

• version — string, one of v4 | v7 | ulid, default v4. v4, v7 or ulid. Also accepted as type.
• count — integer, default 1. How many.
• uppercase — boolean, default false. Upper-case UUIDs (ULIDs are always upper-case).

Words, characters (with and without spaces), UTF-8 bytes, sentences, paragraphs, and reading/speaking time. Send long text as a POST body. Tool page

GET https://digitalgreenhouse.com.au/api/tools/word-counter?text=Short%20and%20sweet.%20Two%20sentences%21

• text — string, required. The text to count.

Convert a colour between HEX, RGB and HSL. Tool page

GET https://digitalgreenhouse.com.au/api/tools/color-converter?color=%230E5C3A

• color — string, required. HEX (#0E5C3A or 0E5C3A or #abc), rgb(14, 92, 58) or hsl(155, 74%, 21%). Also accepted as colour, c.

Contrast ratio between a text colour and a background colour, with pass/fail for WCAG 2.x AA and AAA (normal text, large text, UI components). Tool page

GET https://digitalgreenhouse.com.au/api/tools/contrast-checker?fg=%23767676&bg=%23FFFFFF

• fg — string, required. Text (foreground) colour: HEX, rgb() or hsl(). Also accepted as foreground, text.
• bg — string, required. Background colour: HEX, rgb() or hsl(). Also accepted as background.