Convert all types of measurement units to the ones that work better for you simply with this API.

Convert numbers to perfectly formatted text across 28 languages and over 35 predefined currencies. Our API handles standard, formal, and check writing formats with support for custom currencies. Perfect for financial documents, legal contracts, invoices, and multilingual applications. Simple integration with comprehensive documentation.

The Global Postal Code Precision API delivers precise postal code data worldwide, supporting a wide range of industries including logistics, location services, e-commerce, and others.

The Expression Evaluation API is a versatile natural language calculator that can evaluate mathematical expressions and return the results in plain text. Simply input the expression to be evaluated, and the API will scan and compute the calculation, making it an easy-to-use tool for developers who want to incorporate a calculator function into their applications.

NumXlator is a very fluent API for translating numbers into words in various languages, including: عربي (Arabic), Czech, Danish, Deutsch (German), English, Español (Spanish), Finnish, Français (French), Hausa, Hungarian, Igbo, Indonesian, Italiano (Italian), Malayu (Malaysian), Nederlands (Dutch), Norwegian, Polish, Português, Русский (Russian), Romanian, o'zbek (Uzbek), Swahili, Swedish, Thai, Turkish, Tiếng Việt (Vietnamese), Yoruba, 中国人 (Chinese), 日本語 (Japanese), and 한국인 (Korean)

The Precise Measure Conversion API simplifies unit conversions seamlessly, catering to diverse applications with accurate and flexible conversion capabilities.

Effortlessly convert units across length, weight, temperature, volume, and more with accurate, real-time results to simplify calculations in diverse applications.

Convert between 138 units across 19 categories with auto-detection, compound measurement parsing, batch conversion, locale formatting, and ingredient cooking conversions. Fast, stateless, and fully documented.

Calculate the monetary value of one pip for any forex trade configuration with automatic currency conversion. Data is currently refreshed once per day.

Quickly retrieve comprehensive unit conversion information with our user-friendly Unit Conversion Information API.

Capture and standardize measurement units with the Measurement Unit Capture API, designed for developers.

A globally usable mortgage and loan calculator supporting multiple currencies. Covers monthly repayments, full amortisation schedules, affordability reverse-calculation, early repayment savings, side-by-side comparison, total cost of ownership, APR, debt-to-income ratio, stamp duty estimates, refinance break-even, balloon payments, interest-only periods, loan consolidation, and biweekly payment options. Pure maths — no external data sources. Pass any currency code (USD, GBP, EUR, ZAR, AUD, etc.) for localised display.

A Precision Measurement Conversion API is a web-based service that provides a convenient and accurate way for users to convert between different measurement units.

Effortlessly convert and retrieve measurement units with precision using our Unit Measurement Conversion Fetch API.

Identify automotive faults accurately with our Precision Automotive Fault Identifier API, ensuring reliable diagnostics and efficient repairs.

The Measurement Distances API precisely measures the distance between two points on Earth, supporting features such as navigation and optimizing logistics operations.

Streamline your application with the Unit Conversion Data Extractor API for fast and accurate unit transformations.

Access and convert diverse units easily with the Convert Units Data Retrieval API for seamless integration.

Seamlessly convert measurements between metric and imperial units globally with this versatile API.

Ovulation estimate and 6-day fertile window from cycle length. Not contraceptive guidance.

Integer and floating-point edge cases: int32/int64 limits, NaN, infinity, denormals, and IEEE 754 rounding. Deterministic seeds, and every value explains what it breaks.

Due date from last menstrual period using Naegele's rule, with 21-45 day cycle length correction.

Dating from BPD, HC, AC and FL measurements in millimetres, using Hadlock 1984 equations.

Conception date from a last menstrual period or from a known due date, as ISO 8601 dates

Experience precision in currency conversions for all your financial needs.