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26 tools found

Number Base Converter

Convert between binary, octal, decimal and hexadecimal number systems.

Number to Words

Convert numbers to Turkish words. Ideal for checks and contracts.

Percentage Calculator

6 percentage calculation modes. Increase/decrease, ratios and more.

QR Code Reader

Scan QR codes and barcodes from webcam or image file. BarcodeDetector API, 100% browser-side.

Unit Converter

200+ units in 15+ categories: length, area, volume, mass, temperature, speed, energy, power, pressure, data, angle, frequency, fuel.

Trigonometry Calculator

sin, cos, tan, cot, sec, csc, inverse and hyperbolic functions. Unit circle visualizer. Degree/radian/gradian.

Age Calculator

Age from birth date. Total days/weeks/months/hours, zodiac, Chinese zodiac, next birthday countdown.

Scientific Calculator

Trig, log, exponents, factorial. Memory (M+/M-/MR/MC), history, DEG/RAD mode, keyboard support.

VAT Calculator

Add VAT or extract tax base from inclusive price. 20/10/1/0% rates, bidirectional, all-rates comparison table.

Withholding Tax Calculator

2025 withholding tax for freelance, rent, dividend, interest & 6 more types. Gross-net conversion with optional VAT.

Hourly Rate Calculator

Calculate hourly rate from annual/monthly salary. Freelance invoice, VAT, withholding, leave days and reference table.

Mole Calculator (Chemistry)

Molar mass from chemical formula. Mole ↔ gram ↔ molecules conversion, element composition, 10 common compounds.

Tax Calendar 2025

VAT, withholding, advance tax, corporate tax and SSI deadlines. Upcoming obligation alerts and filters.

Rent Increase Calculator

Rent increase calculator with CPI or 25% legal cap. Recent CPI quick select and annual projection table.

Tax Benefit Calculator

Impact of expense deductions, investment incentives, and R&D on income tax savings. 2025 tax brackets, taxable base and effective rate comparison.

Physics Formula Calculator

Physics formulas in 5 categories: kinematics, dynamics, energy, waves, electricity. Free fall, Newton laws, Ohm law, physical constants reference.

Chemistry Solution Calculator

Molarity, dilution (C1V1=C2V2), pH, and solubility calculations. 10 common compounds, strong/weak acid-base pH, visual pH scale.

TR Severance Pay Calculator

TR severance, notice pay, unused vacation comp — 2026 rates.

TR Title Deed Tax

Calculate Turkish title deed transfer tax (4% sale).

TR Auto SCT (ÖTV) Calculator

Calculate Turkish auto Special Consumption Tax + VAT.

Turkey MTV Calculator

Turkish Motor Vehicle Tax — engine size + age based annual + 2 installments.

Turkey Property Tax

Turkish property tax — residential/commercial/land + metropolitan/normal city.

Turkey Stamp Tax

Turkish stamp tax — contract type + amount based.

Eisenhower Matrix

Classify tasks in Urgent/Important matrix. 4 quadrants. Focus on Q2!

Lottery Number Generator

Cryptographically random Turkish lottery numbers.

Composition Calculator

Composition plan rates + installment table per Turkish IIK.