Calculators

The full My Side Gig calculator suite.

15 free tools to help you stack cashback, value your points, switch banks profitably and make every offer +EV — built by side-hustlers, for side-hustlers.

Cashback

Cashback Stacking Calculator

Stack cashback portals, cards and codes the right way.

Open calculator

Instant Cashback Calculator

Know your true discount on instant cashback offers.

Open calculator

Supermarket Cashback Finder

Top instant cashback rates on UK supermarket gift cards.

Open calculator

Offline Purchase Calculator

Compare in-store routes for the cheapest checkout price.

Open calculator

Rewards Points

AMEX Points Calculator

Convert AMEX Membership Rewards into real pounds.

Open calculator

Value Per Point Calculator

See what a single point or mile is actually worth.

Open calculator

Yonder Points Value Calculator

See what your Yonder points are really worth.

Open calculator

Savings & Interest

Effective Interest Calculator

Turn headline AER into real-world returns.

Open calculator

Banking

Bank Switch Eligibility Checker

Check if you qualify for the latest switch bonus.

Open calculator

Gift Cards

One4all Gift Card Optimiser

Squeeze every penny out of your One4all balance.

Open calculator

Tools

Railcard Finder

Find the best-value railcard for the way you travel.

Open calculator

Fair Ticket Price Calculator

Price raffle and competition tickets to exactly cover the prize.

Open calculator

Betting Games

EV (Expected Value) Calculator

Know whether an offer is +EV before you commit.

Open calculator

Beat the Drop Calculator

Play ITV’s Beat the Drop with the maths on your side.

Open calculator

Matched Betting Calculator

Work out lay stake, liability and locked-in profit.

Open calculator