Cloud Storage Cost Calculator: iCloud+ vs Google One vs OneDrive vs Dropbox

Pick the storage you actually need and how many people will share it. We show the real monthly cost, the 1, 3, and 5-year total, and the downgrade risk if you outgrow your tier — so you don't pay for space you won't use.

Basis: published consumer plans (monthly + annual where offered) Updated 2026 plan tiers Region: Global EN, USD Assumptions disclosed below
Cost per 100 GB drops as tier grows But you pay for unused space if you over-buy. Right-size first. 50 GB $1.98/100GB 200 GB $1.50/100GB 2 TB $0.50/100GB 6 TB $0.33/100GB Illustrative — typical 2026 list prices across major providers.

What this tool answers

  • Which plan is cheapest for my storage and household size, not the average user.
  • How the 1, 3, and 5-year totals compare — including the annual-vs-monthly gap.
  • What happens if I exceed the tier: downgrade risk, locked uploads, lost photo sync.
  • When a smaller tier + cleanup beats paying for the next size up.

1. Your situation

Include photos, device backup, and shared family files.
Family plans usually cap at 5–6 members and share one pool.
Photos, 4K video, and device backups typically grow 15–30%/year.
Annual saves ~16% on Google One and Microsoft 365.
Affects backup convenience but not raw price.
If yes, OneDrive's bundled value changes the math.
Quick presets:

2. Your cheapest plan, with downgrade risk

Winner
Includes ecosystem fit and downgrade risk.
5-year total
— / month effective
Gap vs runner-up
over 5 years, same household
Need: 350 GB Effective per person: 175 GB Need in 5 yrs (growth applied): Cheapest sufficient tier: Annual vs monthly save:

5-year cumulative cost — winner highlighted

Pick a plan above to see when each one crosses the next price step.

3. Side-by-side at your tier

Plan Tier picked Monthly Annual 5-yr total Shared pool Device backup Downgrade risk

Prices are typical 2026 consumer list prices in USD. Local tax, regional promotions, and student/education discounts not included. Annual cycles assume you stay subscribed for the full year.

4. How to read your result

5. Read next — the 10 companion guides

Each article explains one input, one persona, or one risk in the calculator above.

6. What we assume — and what we don't claim