Inflation Calculator

How to Use This Inflation Calculator

No sign-up. No email. Drag the sliders and the numbers update instantly. Here's what each one does:

Current Amount. This is the dollar figure you want to project into the future. Could be your savings balance, an annual salary, or the price of something you're planning to buy. The slider goes from $100 to $1,000,000 in $1,000 steps. Start with $100,000 — it's the default — and adjust from there.

Years. How far into the future you want to look. Slide it from 1 year to 50 years. For short-term planning (like a car purchase in 3 years), keep it low. For retirement planning, crank it to 20, 30, or even 40 years. That's where inflation gets genuinely scary.

Inflation Rate. The annual rate you expect. The default is 3%, which is close to the U.S. historical average of 3.2% since 1913 (source: Bureau of Labor Statistics). You can slide it from 0% to 10%. If you want to model the 2022 spike, try 8%. For the Fed's target, use 2%.

The calculator shows you three things: the future equivalent (how much you'll need to match today's purchasing power), the adjusted value (what your current dollars will actually buy in the future), and the purchasing power loss as both a dollar amount and a percentage. The donut chart makes the damage visual.

What Inflation Actually Does to Your Money

Forget the textbook definition for a second. Inflation is a thief that robs you in slow motion. You don't feel it week to week. But zoom out ten years and the damage is obvious.

Think about it this way. In 2016, I could walk into Trader Joe's and fill a grocery bag — eggs, bread, chicken, some produce, a bottle of olive oil — for about $35. That same bag in March 2026? Easily $52 to $55. I'm not buying fancier stuff. I'm buying less, actually. The eggs alone went from $2.79 to $4.29 at one point during the 2023 spike. I actually pulled up my old Mint transactions to check. My average Trader Joe's run in January 2020 was $41. Same store, same basic list, January 2026: $63. That's a 54% increase in six years.

That's inflation in action. The Bureau of Labor Statistics tracks this through the Consumer Price Index (CPI). The CPI measures price changes across a fixed basket of goods — about 80,000 items across 75 urban areas — covering food, housing, transportation, medical care, education, and more. The BLS publishes new data every month. As of the March 2026 CPI report, the 12-month all-items index stood at approximately 2.8% year-over-year (BLS CPI Summary).

"But 2-3% is the target — that's fine, right?" That's what people tell themselves. And for any single year, sure, 3% is barely noticeable. You pay an extra 90 cents for your $30 lunch. Whatever. But inflation compounds, just like interest does — except it works against you. At 3% annual inflation, prices double every 24 years. A $5 coffee in 2026 becomes a $10 coffee by 2050. Your salary might keep up. Your savings account almost certainly won't.

Here's what most people miss: holding cash is losing money. Not in a dramatic, stock-market-crash way. In a quiet, grinding, invisible way. Your bank balance shows the same number. But what that number can buy shrinks every single year. A standard savings account paying 0.5% APY while inflation runs at 3% means you're losing 2.5% of your purchasing power annually. That's not saving. That's a slow leak.

The Math Behind Inflation

The formula is simple — identical to compound interest, because inflation is compounding:

FV = PV × (1 + r)^t

• FV = future value (what you'll need to match today's purchasing power)
• PV = present value (the amount today)
• r = annual inflation rate as a decimal (3% → 0.03)
• t = number of years

Example: $100,000 at 3% inflation for 20 years → $100,000 × (1.03)²⁰ = $180,611. You'd need $180,611 in 2046 to buy what $100,000 buys today. The calculator above does this math instantly for any inputs.

3 Eye-Opening Examples

Example 1: $100K in a Checking Account for 20 Years

You inherit $100,000 and park it in a checking account earning 0.01% APY. You tell yourself it's "safe." After 20 years at 3% average inflation, that $100,000 has the purchasing power of just $55,368 in today's dollars. You didn't spend a dime. You didn't get scammed. You just let inflation eat $44,632 of your money while it sat there doing nothing.

If that same $100,000 went into a high-yield savings account at 4.5% APY, you'd at least have $241,171 nominally — which after 3% inflation is about $133,500 in real purchasing power. Still ahead. Not great, but you'd have actually grown your money instead of watching it shrink.

Example 2: College Tuition — $25K/Year Today vs. 18 Years From Now

The average cost of tuition at a four-year public university for the 2024-2025 academic year was approximately $11,610 in-state, per the College Board. But let's use $25,000/year as a round number that includes room, board, and fees at a mid-tier private school.

At the historical college cost inflation rate of about 5% per year (which has consistently outpaced general CPI), $25,000/year becomes $60,132/year in 18 years. That's $240,528 for a four-year degree. If you just started a 529 plan for your newborn, you need to save roughly $590/month at 7% returns to cover it. Wait until the kid is 8? Now you need $1,400/month. Procrastination is expensive.

Example 3: The $1M Retirement Illusion

You've probably heard "$1 million is enough to retire on." Maybe. If you retire tomorrow. But if retirement is 20 years away and inflation averages 3%, you don't need $1 million. You need $1,806,111 to have the same purchasing power. And if inflation runs closer to 4% (which it did for most of 2021-2023), that number jumps to $2,191,123.

I ran these numbers for myself about two years ago and honestly sat there for a minute just staring at the screen. I had a vague "$1.2M should be enough" target in my head. Plugging in 3.5% inflation for 22 years turned that into needing $2.5M. That was a wake-up call. I bumped my 401(k) contribution from 10% to 15% that same week. The hardest part wasn't the math. It was accepting that the number I'd been comfortable with for years was wrong. Inflation doesn't feel like anything day to day. But run it out 20 years and it's a completely different picture.

How to Fight Back Against Inflation

You can't stop inflation. But you can make sure your money grows faster than prices rise. Here are the best tools available right now:

Treasury Inflation-Protected Securities (TIPS). These are U.S. government bonds where the principal adjusts with CPI. If inflation is 3%, your principal goes up 3%. You get interest on the higher amount. They won't make you rich, but they guarantee you won't lose to inflation. You can buy them directly at TreasuryDirect.gov with no fees.

Series I Bonds. I-Bonds are the most underrated investment in America. The composite rate hit 5.27% in November 2023 and has remained competitive. You're capped at $10,000 per person per year through TreasuryDirect (plus up to $5,000 via tax refund), and you must hold for at least one year. But there's virtually zero risk. The fixed rate component is locked for 30 years; the inflation component resets every six months based on CPI-U.

High-Yield Savings Accounts. As of early 2026, the best HYSAs are paying 4.3-4.7% APY (per Bankrate and NerdWallet). That's close to matching inflation, which means your emergency fund isn't bleeding purchasing power. Look at online banks — Ally, Marcus, Discover. Traditional brick-and-mortar banks are still paying 0.01-0.50%. Don't park real money there.

Stocks. Over every rolling 20-year period since 1926, the S&P 500 has beaten inflation 94% of the time, according to data from NYU Stern's Aswath Damodaran. The average real return (after inflation) over those periods is approximately 7%. Yes, stocks are volatile year to year. But if your time horizon is 10+ years, equities are the best inflation hedge that exists. Low-cost index funds (like VTI or FXAIX at 0.015-0.03% expense ratio) are the simplest way in.

Real Estate. Property values and rents tend to rise with or above inflation over long periods. The median existing-home price in the U.S. was $398,400 in February 2026 (National Association of Realtors). Real estate is not liquid and carries maintenance costs, but as an inflation hedge over 15-30 year horizons, it has a strong track record.

The worst thing you can do? Nothing. Sitting in cash feels safe. It's not. Every year you wait, inflation takes another bite.