Everyday calculators for India
Salary, rent, EMI, SIP, GST, electricity, fuel, paint and more — free, no login, works on mobile.
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Popular calculators
Common money, home, tax, bill, conversion, and measurement questions people start with.
Estimate monthly take-home salary in India from CTC or gross salary, while separating employee PF, employer PF, TDS, professional tax, benefits, and variable pay.
Useful for: Understand how CTC and gross salary become monthly in-hand pay, then use the spendable amount for rent, budget, and EMI decisions.
Estimate a practical monthly rent range in India from your take-home income, regular debt payments, essential expenses, and preferred savings.
Useful for: Understand how much monthly rent may fit within a household budget before choosing a property.
Estimate a loan EMI, total interest, and whether the payment fits your Indian household budget after existing EMI, rent, essentials, and target savings.
Useful for: Decide whether a proposed loan EMI is manageable, understand its total cost, and estimate a more conservative EMI and loan limit.
Plan an India-first monthly budget using take-home income, regular expenses, debt payments, family obligations, and a savings target.
Useful for: Understand whether monthly expenses and savings fit within take-home income, identify the largest pressure, and decide what to adjust.
Add GST to a taxable price or extract GST from an inclusive bill, with CGST/SGST or IGST split, quantity, discount, invoice rounding, and optional margin checks.
Useful for: Understand the pre-tax value, GST amount, customer invoice total, tax split, and whether a quoted price protects the entered product cost and target margin.
Estimate appliance running cost, monthly electricity use, a flat-rate bill, and savings from lower daily usage with editable ₹/unit or global currency inputs.
Useful for: Understand how much an appliance may add to the bill, estimate a monthly electricity amount, identify usage pressure, and decide what to check or reduce next.
Convert common length, area, volume, mass, temperature, speed, time, and data storage units, then reuse the result without mixing unit systems.
Useful for: Convert a common measurement, understand what the result means, avoid mixing incompatible unit systems, and continue to a relevant daily-use calculator.
Calculate room, plot, circle, triangle, trapezoid, parallelogram, or multiple-room area; convert common square units; and estimate cost by area.
Useful for: Measure a surface, understand the result in practical units, estimate an optional area-based cost, and choose the correct next material calculator.
Start from your situation
Pick the decision in front of you and jump straight to the tools that help.
I want to…
Grow money with SIP, RD, FD, or a lumpsum, and plan towards a goal.
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See the EMI, what you can afford, and whether prepaying helps.
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Find take-home pay, plan the month, and check notice-period dues.
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See what card interest costs and whether prepaying clears it faster.
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Add or remove GST and check the split before billing.
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Check rent you can afford and plan bills, water, and paint.
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Fuel for a trip, unit conversions, percentages, and dates.
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Every tool linked here works in the browser now, without login or server upload.
Image size tools
Photo, signature, passport photo, and image cleanup tools for Indian forms and uploads.
Prepare a photo for portals that ask for a small image file near 20KB without changing the purpose of the photo.
Useful for: Reduce an application photo to a very small upload size for Indian exam, job, college, and government forms.
Prepare a scanned signature for portals that ask for a very small image file near 10KB.
Useful for: Reduce a signature image for Indian online forms without uploading it to a server.
Prepare a photo for portals that allow a slightly larger image file around 50KB.
Useful for: Reduce a photo to a common Indian form upload size while keeping the face and document purpose clear.
Prepare a general image for websites that reject files larger than 100KB.
Useful for: Make an image small enough for upload while keeping the important details visible.
Convert WebP images into JPG for websites or forms that do not accept WebP.
Useful for: Make a downloaded WebP image usable where only JPG or JPEG is accepted.
Prepare a privacy-focused copy of a photo by removing hidden camera and location metadata.
Useful for: Strip photo metadata before sharing or uploading when the image itself is enough.
Arrange one portrait into a white 4-photo or A4 print sheet entirely in your browser.
Useful for: Create a printable passport photo layout after checking the required photo size and background rules.
Place a name, date, or short custom label on a photo with controlled position and readable contrast.
Useful for: Add simple visible text on a photo without opening a heavy editor.
PDF tools
PDF size, page number, watermark, JPG to PDF, and document-preparation tools.
Convert one or more JPG, PNG, or WebP images into a compact PDF with an honest 500KB target check.
Useful for: Convert one or more image pages into a compact PDF for form uploads.
Create a cleaner browser-local PDF copy and check whether it passes a 1MB upload target.
Useful for: Prepare a PDF for Indian job, scholarship, admission, KYC, and government upload forms.
Add sequential page numbers to a PDF locally with a chosen start number, position, and font size.
Useful for: Add simple page numbering to a PDF without uploading the document to a server.
Add a centered or diagonal text watermark to every PDF page locally in the browser.
Useful for: Mark a PDF copy with a name, purpose, or date before sharing.
Hindi/text tools
Hindi font conversion, Instagram caption cleanup, invisible spaces, and name styling tools.
Clean a caption and keep intentional blank lines using invisible separators for easier Instagram posting.
Useful for: Prepare captions that keep readable spacing after copying into Instagram or other social apps.
Copy an invisible separator character for captions, bios, usernames, and formatting tests.
Useful for: Get a controlled invisible character without hunting through random websites or copying unsafe text.
Create copy-ready Hindi, Hinglish, or English display-name variants without changing the original letters.
Useful for: Add simple decorative frames around a name for social profiles while preserving the typed Unicode text.
Utility tools
File hash, ZIP, and everyday browser utilities that do not need login or paid APIs.
Calculate a SHA hash for a file in your browser to compare downloads or verify file integrity.
Useful for: Check whether a file matches a published checksum without uploading the file anywhere.
Create ZIP archives or inspect and extract ZIP files locally without uploading their contents.
Useful for: Group form documents into one archive or safely inspect a received ZIP using browser-only processing.
Browse by category
Each category points to a small, useful set of calculators instead of a long link wall.
See what reaches your account, plan spending, check what rent and EMIs fit, and grow savings.
Browse Money calculatorsGrow savings with SIP, RD, and lumpsum investing, and weigh loan EMIs before you commit.
Browse Finance / Tax calculatorsPlan household bills, water storage, painting, and room measurements with fewer guesses.
Browse Home calculatorsMeasure an area first, then estimate paint, tiles, and concrete for the job.
Browse Construction calculatorsEstimate fuel for a trip, convert unfamiliar units, and keep the cost inside your budget.
Browse Travel calculatorsWork out marks, dates, units, and take-home salary for study, forms, and job decisions.
Browse Student / Job calculatorsCheck age, duration, and date-based eligibility before completing a form or schedule.
Browse Time / Date calculatorsConvert common measurements before using them in travel, home, or construction calculations.
Browse Unit Converters calculatorsWhat to try next
A useful result often becomes the input for the next calculator. These sequences keep related decisions together.
Monthly planning works better when income, housing, debt, utilities, and travel are seen together.
Measure the space once, then use that result to estimate finishes and materials.
Estimate fuel first, convert distance or volume when needed, then check the trip against your budget.
Confirm age and dates, calculate a percentage, and convert units before submitting details.
Estimates, not guarantees
Rupeka calculators provide estimates from the values and assumptions shown. Check official notices, bills, product labels, contracts, or a qualified professional before making a final decision.