Calculators and Unit Conversion

Percentages, discounts, loans, interest, unit prices, currency, temperature, fuel economy, number bases, and roman numerals.

This guide is the canonical guide page for related tools on ilham.dev. It should grow into practical explanations, caveats, examples, and references instead of creating one thin article per utility.

Related tools

• Number Base Converter — Convert integers between binary, octal, decimal and hex.
• Benchmark Builder — Compare a set of measured values and their ratios.
• Currency Formatter — Format a number as a currency amount with thousand separators and a symbol, in Indonesian or English style.
• Discount Calculator — Work out a final price, a discount percent, or the original price from a discount and a final price.
• Fuel Economy Converter — Convert fuel economy between km/L, L/100 km and US or UK MPG.
• Interest Calculator — Calculate deposit or loan interest after tax, with flat, effective, annuity, compound, tiered, step-up and floating methods.
• Loan Calculator — Work out a fixed-rate loan payment, its amortisation schedule and the interest saved by paying extra.
• Math Evaluator — Evaluate a mathematical expression, with variables and functions.
• Roman Numerals — Convert between Roman numerals and decimal numbers.
• Take-Home Pay Calculator — Estimate Indonesian net salary from gross pay, with PPh 21 and the employee share of BPJS broken out.
• Temperature Converter — Convert between Celsius, Fahrenheit and Kelvin.
• Unit Price Comparator — Compare products by unit price so different pack sizes can be ranked on the same scale.

Notes for future edits

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