เครื่องคิดเลข
Everyday calculators, percentage, BMI and more
Select a tool below. Every tool runs locally in your browser and is free to use.
🧮 เครื่องคิดเลข · Total 66 tools
AC Size CalculatorEstimate the cooling capacity (BTU/W/HP) needed for a room. Estimates AC tonnage by room area, height and insulation, metric/imperial.
Algeria Irp CalculatorAlgeria Irp Calculator: enter key parameters for quick estimate, built for overseas users.
Argentina Aguinaldo CalculatorArgentina Aguinaldo Calculator: enter key parameters for quick estimate, built for overseas users.
Argentina Ganancias CalculatorArgentina Ganancias Calculator: enter key parameters for quick estimate, built for overseas users.
Aspect Ratio CalculatorAspect ratio calculator: get ratio from width and height with common presets and preview for design and video, with one-click copy, offline.
Australia Super Guarantee CalculatorAustralia Super Guarantee Calculator: enter key parameters for quick estimate, built for overseas users.
Austria Income Tax CalculatorAustria Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Bangladesh Provident Fund CalculatorBangladesh Provident Fund Calculator: enter key parameters for quick estimate, built for overseas users.
Beer Calorie CalculatorBeer calorie calculator: get calories from ABV and volume with multi-brand compare for fitness and diet, with one-click copy, offline.
Belgium Income Tax CalculatorBelgium Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Video Bitrate CalculatorBitrate calculator: get bitrate and file size from resolution, fps and duration with recommended settings for video and live, with one-click copy, offline.
Brazil Fgts CalculatorBrazil Fgts Calculator: enter key parameters for quick estimate, built for overseas users.
Cambodia Salary Tax CalculatorCambodia Salary Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Cost Of Living Index CalculatorCost Of Living Index Calculator: enter key parameters for quick estimate, built for overseas users.
Costa Rica Renta CalculatorCosta Rica Renta Calculator: enter key parameters for quick estimate, built for overseas users.
Cylinder Volume CalculatorCylinder volume: enter radius and height to get volume, surface area and capacity in L/gallons. Supports batch processing, export and one-click copy.
Due Date CalculatorDue date calculator: estimate due date, gestational weeks and checkup schedule by last period or conception with lunar and reminders for pregnancy.
Electricity Cost CalculatorElectricity cost calculator: estimate cost from power and time and reverse from budget for home, with one-click copy and offline.
EV Charging Time CalculatorEV charging calculator: enter capacity, power and price to estimate time, cost and range gain with multi-model comparison for EV planning.
Flooring CalculatorFlooring calculator: enter room and board size to get boards needed, waste and cost with herringbone and straight lay for renovation.
เครื่องคิดเลขเศษส่วนFraction calculator: add, subtract, multiply and divide fractions with simplification, mixed numbers and decimal conversion for math.
France Csg Crds CalculatorFrance Csg Crds Calculator: enter key parameters for quick estimate, built for overseas users.
Fuel Cost CalculatorFuel cost calculator: get one-way and round-trip fuel cost and cost per 100km by distance, consumption and price for road trips.
Gear Ratio CalculatorGear ratio calculator: get ratio, speed and torque by driving and driven teeth for mechanical design and bike gearing. Supports batch processing and one-click copy.
Germany Income Tax CalculatorGermany Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Greece Income Tax CalculatorGreece Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Japan Social Insurance CalculatorJapan Social Insurance Calculator: enter key parameters for quick estimate, built for overseas users.
Jordan Income Tax CalculatorJordan Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Kenya Nhif CalculatorKenya Nhif Calculator: enter key parameters for quick estimate, built for overseas users.
Malaysia Epf CalculatorMalaysia Epf Calculator: enter key parameters for quick estimate, built for overseas users.
Morocco Cnss CalculatorMorocco Cnss Calculator: enter key parameters for quick estimate, built for overseas users.
Nigeria Pension CalculatorNigeria Pension Calculator: enter key parameters for quick estimate, built for overseas users.
Nonresident Withholding CalculatorNonresident Withholding Calculator: enter key parameters for quick estimate, built for overseas users.
Number Abbreviation FormatterNumber prefix formatter: format large numbers in K, M or scientific with prefix and locale separators for reports, with one-click copy and offline save.
Ohm's Law CalculatorOhm's law calculator: enter any two of voltage, current, resistance to get third and power with formula for design, with copy, offline and history.
Oman Gratuity CalculatorOman Gratuity Calculator: enter key parameters for quick estimate, built for overseas users.
Overseas Allowance Tax CalculatorOverseas Allowance Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Overseas Remittance Fee CalculatorOverseas Remittance Fee Calculator: enter key parameters for quick estimate, built for overseas users.
Ovulation CalculatorOvulation calculator: estimate ovulation, fertile window and next period from last period and cycle with calendar for planning, private offline and multilingual.
Pakistan Income Tax CalculatorPakistan Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Panama Xiii Mes CalculatorPanama Xiii Mes Calculator: enter key parameters for quick estimate, built for overseas users.
Pet Age CalculatorPet age calculator: convert cat and dog age to human age by species with stage and health tips and breed tweak for pet care, with one-click copy, offline.
Poland Zus CalculatorPoland Zus Calculator: enter key parameters for quick estimate, built for overseas users.
Qatar Income Tax CalculatorQatar Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Rice to Water RatioRice water ratio calculator: recommend ratio and water by rice type and texture with servings and pot fit for cooking, with one-click copy, offline and multilingual.
Rwanda Paye CalculatorRwanda Paye Calculator: enter key parameters for quick estimate, built for overseas users.
เครื่องคิดเลขวิทยาศาสตร์Scientific calculator: support trig, exp, log and factorial with history and formulas for study and engineering, with one-click copy, offline and multilingual.
Screen PPI CalculatorScreen PPI calculator: calculate PPI, pixel density and aspect ratio from resolution and diagonal inches for purchase and design, with one-click copy and offline.
Singapore Cpf CalculatorSingapore Cpf Calculator: enter key parameters for quick estimate, built for overseas users.
Sleep Cycle CalculatorSleep cycle calculator: get best bedtimes from wake-up time using 90-min cycles with count for health, one-click copy and offline.
Garden Soil CalculatorSoil calculator: get volume, weight and bags from length width depth with unit conversion for gardening and construction, with one-click copy, with one-click copy,.
Speed Distance Time CalculatorSpeed distance time calculator: choose target and enter other two to calculate with multiple units for travel and sports, with one-click copy and offline.
Thailand Withholding Tax CalculatorThailand Withholding Tax Calculator: enter key parameters for quick estimate, built for overseas users.
เครื่องคำนวณทิปTip calculator: calculate tip, total and per-person share from bill and tip percent with tax for dining, with one-click copy and offline.
Uk National Insurance CalculatorUk National Insurance Calculator: enter key parameters for quick estimate, built for overseas users.
Uk Student Loan Repayment CalculatorUk Student Loan Repayment Calculator: enter key parameters for quick estimate, built for overseas users.
Us Capital Gains Tax CalculatorUs Capital Gains Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Us Fica Tax CalculatorUs Fica Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Us Property Tax CalculatorUs Property Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Us Rental Income Tax CalculatorUs Rental Income Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Us Rsu Tax CalculatorUs Rsu Tax Calculator: enter key parameters for quick estimate, built for overseas users.
Us Unemployment Benefits CalculatorUs Unemployment Benefits Calculator: enter key parameters for quick estimate, built for overseas users.
Venezuela Islr CalculatorVenezuela Islr Calculator: enter key parameters for quick estimate, built for overseas users.
Vietnam Social Insurance CalculatorVietnam Social Insurance Calculator: enter key parameters for quick estimate, built for overseas users.
Visa Income Requirement CalculatorVisa Income Requirement Calculator: enter key parameters for quick estimate, built for overseas users.
Weighted Average CalculatorWeighted average calculator: get weighted average from values and weights with formula and contribution for grades and investment, with one-click copy, offline.
FAQ
What is the เครื่องคิดเลข category?
The เครื่องคิดเลข category includes 66 free online tools for common needs. All run locally in your browser - no sign-up or install required.
Are these tools free?
Yes, all tools are free with no usage limits.
Do I need to register?
No. Open a page and use it right away - your data stays in your browser.
Which languages are supported?
This site supports 12 languages: Chinese, English, Japanese, Korean, Spanish, French, German, Portuguese, Russian, Arabic, Indonesian and Hindi.