Tech & Gadget Calculators

Tech & Gadget Calculators: RAM, Storage, Gaming Laptop, Camera and Data Usage

Buying tech is easier when you know what you need. These 7 calculators answer the common questions: how much RAM (16 GB for most laptops), how much storage (photos and 4K video fill it fastest), gaming laptop specs by GPU tier, camera card size and speed class, which lens to buy, how much mobile data you use and how long charging takes.

  • 7 free tools
  • No sign-up
  • Made for India (₹, Indian sizes)
  • Updated
7 tools

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RAM Calculator: How Much RAM Do I Need?Your use to 8, 16, 32 GBStorage Calculator: How Much Storage Do I Need?Photos, videos, apps to GB neededGaming Laptop SelectorGames + fps to the specs to buy

All tech & gadget calculators

Camera Memory Card CalculatorPhotos + video to card size and speedCamera Lens SelectorSubject + sensor to lens to buyMobile Data Usage CalculatorDaily use to GB per dayBattery Charge Time CalculatorBattery + charger to charge time

Frequently asked questions

Is 8 GB RAM enough?

For light use, yes. For multitasking and work, 16 GB is the sensible minimum on laptops.

Is 128 GB storage enough for a phone?

For light camera use, yes. If you shoot 4K video or keep years of photos, choose 256 GB.

What memory card do I need for 4K?

A V30 (U3) card handles most 4K up to about 100 Mbps; higher bitrates need V60 or V90.

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Know about CouponTalk

CouponTalk is an Indian shopping research site founded by Hemant Kumar. We help you choose the right product, get the size right and pay a fair price, with buying guides, 248 free calculators, a price tracker and verified deals.

We stand out because

  • Made for India: prices in ₹, Indian sizes, and brands and stores you can buy from here.
  • Show the working: every calculator explains its formula and gives a worked example.
  • Real price history: each price shows when it was checked, so you know a deal is real.
  • Free for everyone: no sign-up, no paywall.

Our key focus areas

What makes us different

  • Not for sale: no brand can pay for a ranking or a "best" spot.
  • Checked by people: every guide and calculator is reviewed before it goes live.
  • Clear sources: RBI rules, GST rates and standard size charts, explained on each tool.
  • Honest limits: we show past prices and never promise future ones. Our editorial policy.

Affiliate disclosure: CouponTalk is reader-supported. We add affiliate links to some products and stores, and we may earn a commission when you click a link and buy, at no extra cost to you. Commissions never change what we recommend. Read our affiliate disclosure.

About CouponTalk

CouponTalk helps Indian shoppers choose the right product, pay a fair price and get the size right the first time, with buying guides, 240+ free calculators, a price tracker and verified deals.

Founded by Hemant Kumar · Also by our founder: Digital Hemant · MantraChantingBox · GuruGramRent

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