Count working days between two dates or add business days to a date, skipping weekends and public holidays of 100+ countries and regions.

Calculates business days, SLA due dates, holiday-aware deadlines, skipped weekends and holidays, business hours, and business-time durations.

Accurate business-day, holiday, and scheduling math for major countries and their subdivisions — without maintaining a single holiday calendar yourself. Add or subtract working days, check if a date is a business day, find the next valid date, or count working days between two dates, with full support for regional subdivisions, custom weekends, and your own blackout dates. One simple GET call, instant JSON.

Trust our Reliable API for consistent date and business day calculations, ensuring you never miss a deadline again.

Enhance your scheduling with the Smart API, designed to simplify date and business day calculations with intelligence.

Get precise results every time with our Accurate API for calculating dates and business days—perfect for business professionals.

The Global API delivers seamless date and business day calculations worldwide, catering to international business needs.

Libera.Date.Api is a high-precision date calculation engine designed to streamline business logic for global applications. Its core strength lies in its advanced Working Days System, which accurately calculates business days by automatically excluding weekends and public holidays for multiple countries (including 100 countries). Beyond simple duration checks, the API offers intelligent scheduling tools like finding the nearest available working day, analyzing date ranges for non-working intervals, and distinguishing between standard weekends and legal holidays. Whether you are computing SLAs, planning delivery windows, or building HR rosters, Libera.Date.Api ensures your dates align with real-world business calendars.

Calculate business days accurately while accessing global holiday data to optimize your workflows.

Indicates if a date is a trading day for LatAm markets (BYMA, B3, BMV); returns the next trading day, lists annual holidays, and calculates business days between dates

Ensure timely project deliveries with the SLA Deadline Calculator, using global holidays for precise deadline calculations.

Look up public holidays for 55 countries, calculate business day deadlines, find the next business day, export holidays to iCal, and more — all backed by versioned JSON data with no external dependencies at runtime. Covers 55 countries across Africa, Americas, Asia, Europe and Oceania for years 2024 to 2027.

Market Calculator API performs financial calculations and currency conversion in multiple markets, facilitating data analysis and comparison of values in different currencies.

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 comprehensive suite of South African financial calculators covering bond and property costs, vehicle finance, PAYE tax, VAT, retirement lump sums, personal loans, and inflation. All monetary values in ZAR. Covers 25 endpoints across bond, vehicle, tax, and personal finance modules. Data sourced from SARS, LPC, Government Gazette, SARB, and Stats SA.

Estimate property costs effortlessly with our comprehensive financial calculator API.

Lender-grade solar+BESS pre-feasibility for African C&I. IRR, DSCR, sensitivity, carbon credits.

Accurately calculate transfer duty and conveyancing fees to streamline property transactions.

Calculate monthly bond repayments quickly to optimize your home loan planning.

Due date from embryo transfer date. Day-3, day-5, day-6 and egg retrieval calculated separately.

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

Gestational age at any given date, returned as a 29w2d label and as total days.

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

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

Optimize financing with our Financial Modelling API tailored for hybrid solar and diesel systems.