Home & Craft
Cross Stitch Fabric Calculator – Size, Margins & Fit
Calculate cross stitch design size and fabric cut size from stitch count, fabric count and margins, or check…
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33 practical calculators for faster decisions.
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Home & Craft
Crochet Blanket Yarn Calculator – Yardage & Skeins
Estimate crochet blanket yarn and whole skeins from a measured swatch or from a known blanket, with an…
Open calculatorHome & Craft
Tablecloth Size Calculator – Drop & Floor-Length Fit
Calculate tablecloth size and drop for round, square, rectangular and oval tables, or check the fit of a…
Open calculatorHome & Craft
Curtain Fullness Calculator – Panels & Fabric Widths
Calculate curtain fullness, ready-made panel count, whole fabric widths and optional pattern-repeat-adjusted cut length in inches or centimeters.
Open calculatorBusiness
Menu Price Calculator – Food Cost, Margin & Markup
Calculate a menu selling price from cost using a target food cost percentage, gross margin or markup, with…
Open calculatorBusiness
Food Cost Percentage Calculator – Recipe & Restaurant Cost
Calculate food cost percentage for a menu item or period, derive food used from inventory and compare the…
Open calculatorCreator Tools
YouTube Watch Time Calculator – Views, AVD & Watch Hours
Calculate YouTube watch time from views and average view duration, or find the views or average duration needed…
Open calculatorCreator Tools
Audiobook Speed Calculator – Listening Time & Savings
Calculate audiobook listening time, time saved and required playback speed using source duration, progress and a target listening…
Open calculatorCreator Tools
Video Script Length Calculator – Words, WPM & Time
Estimate video duration from script words or calculate a word target from runtime, speaking pace, pauses and visual…
Open calculatorMedia & Storage
CCTV Storage Calculator – Cameras, Bitrate & Retention
Estimate CCTV storage and retention from camera bitrate or settings, camera count, recording schedule, motion activity, retention days…
Open calculatorMedia & Storage
Video Recording Storage Calculator – Bitrate & Record Time
Estimate camera and video recording storage from bitrate or camera settings, audio, overhead, clip count and optional card…
Open calculatorMedia & Storage
Audio File Size Calculator – Bitrate, WAV & PCM
Estimate audio file size from duration and encoded bitrate or uncompressed PCM sample rate, bit depth and channels.
Open calculatorMedia & Storage
Screen Recording File Size Calculator – Bitrate & Storage
Estimate screen recording file size from duration, video bitrate or screen settings, audio bitrate, file overhead and recording…
Open calculatorBattery & Power
Solar Battery Charging Time Calculator – Panel Watts & Ah
Estimate solar battery charging time from panel watts, peak sun hours, battery capacity, charge range, real-world losses, daytime…
Open calculatorBattery & Power
12V Battery Runtime Calculator – Ah, Watts & Amps
Estimate 12V battery runtime from Ah capacity, charge range, battery condition, DC load, efficiency and optional lead-acid Peukert…
Open calculatorBattery & Power
Inverter Battery Backup Time Calculator – Estimate Hours
Estimate inverter battery backup time from battery Ah, bank voltage, charge range, inverter losses and running load.
Open calculatorBattery & Power
Power Bank Runtime Calculator – Estimate Hours by Watts
Estimate how long a power bank can operate a phone, tablet, laptop or other connected load using usable…
Open calculatorBattery & Power
Power Bank Charging Time Calculator – Recharge Estimate
Estimate how long a power bank takes to recharge using battery energy, charger output, input limits, efficiency and…
Open calculatorBattery & Power
Power Bank Charge Count Calculator – Estimate Recharges
Estimate how many times a power bank can charge a phone, tablet or laptop using battery energy, efficiency…
Open calculatorStudy & Grades
Weighted Grade Calculator – Calculate Course Average
Combine course component grades by their assigned weights and review the weighted contribution, normalized grade and possible course…
Open calculatorStudy & Grades
Grade Needed on Final Calculator – Required Exam Score
Calculate the minimum percentage and optional marks needed on a weighted final exam to reach a target course…
Open calculatorStudy & Grades
Marks Percentage Calculator – Convert Marks to Percentage
Convert obtained marks out of total marks into an exact percentage.
Open calculatorStudy & Grades
Required Marks Calculator – Find Marks Needed to Pass
Calculate the minimum marks required from remaining work to reach a target score or percentage.
Open calculatorStudy & Grades
Attendance Shortage Calculator – Classes Needed to Reach Target
Calculate the minimum consecutive classes required to reach a selected attendance target.
Open calculatorStudy & Grades
Bunk Calculator – How Many Classes Can I Safely Skip?
Calculate how many upcoming classes can be safely missed while maintaining a required attendance percentage.
Open calculatorStudy & Grades
Subject Wise Attendance Calculator – Multiple Subjects
Calculate attendance percentages for multiple subjects and compare weighted overall attendance with a custom target.
Open calculatorStudy & Grades
Negative Marking Calculator – 1/2, 1/3 & 1/4 Scores
Calculate exam marks after 1/2, 1/3, 1/4, custom-fraction or fixed negative marking.
Open calculatorBattery & Power
Battery C Rate Calculator – Calculate Current & C Rating
Calculate battery C-rate, current, ideal time, nominal power and parallel-string current.
Open calculatorBattery & Power
Inverter Battery Capacity Calculator | Required Ah
Estimate the battery-bank Ah and energy required for an inverter load and target backup time.
Open calculatorBattery & Power
Battery Series Parallel Calculator | Voltage, Ah & Wh
Calculate battery-bank voltage, Ah, Wh, usable energy and total batteries for series, parallel or series-parallel wiring.
Open calculatorBattery & Power
Battery Charge Time Calculator | Ah & Charger Amps
Estimate battery charging time using capacity, charger amps, state of charge, efficiency and the battery bank arrangement.
Open calculatorBattery & Power
UPS Battery Backup Time Calculator | Runtime Estimate
Estimate UPS or inverter battery backup time using battery voltage, Ah capacity, connected load, usable depth and efficiency.
Open calculatorBusiness
PKR Cash Denomination Calculator – Notes & Coins
Split a PKR amount into Pakistani notes and coins or total physical cash by denomination. Free, private and…
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