Carve Wood Wiki Carve Wood Upgrade Cost Calculator

The Carve Wood Roblox upgrade cost calculator projects the cumulative cash required to reach the next milestone in your save. The tool handles four upgrade paths: axe tier, worker hire, biome unlock, and prestige reset. Each path takes the current state and the target state and returns the cumulative cost, the projected cash-per-hour at the target, and the payback time. Bookmark it for the morning of every major spend — the tool is the right companion to the Axe upgrade costs page and the Upgrade priority page.

How the calculator works

The upgrade cost calculator reads the cost table from the Axe upgrade costs page and the worker cost table from the Workers tier list page. The biome cost table is sourced from the How to unlock biomes page. The prestige cost is a fixed number tied to your current rebirth count.

For each upgrade path, the calculator projects three numbers:

• Cumulative cost. The total cash required to reach the target from your current state.
• Cash-per-hour at the target. The expected cash-per-hour once the upgrade is in place.
• Payback time. The active hours required for the upgrade to earn back its cost.

Carve Wood upgrade math reference clip

Axe tier path

The axe tier path takes your current tier and a target tier. It returns the cumulative cost to climb from current to target, the cash-per-hour at the target tier, and the payback time at your current cash-per-hour rate.

Inputs:

• Current tier (1 to 6).
• Target tier (current + 1 to 6).
• Current cash-per-hour (default 8,000).

Example: current tier 3, target tier 5, current cash-per-hour 8,000. The calculator returns cumulative cost 31,800, cash-per-hour at target about 12,000, payback time about 8 hours.

Worker hire path

The worker hire path takes your current worker roster and a target roster. It returns the cumulative hire cost, the cash-per-hour at the target roster, and the payback time.

Inputs:

• Current hires (count).
• Target hires (count).
• Current cash-per-hour.

Example: current hires 1 (Apprentice Logger), target hires 3 (Apprentice, Master, Foreman), current cash-per-hour 8,000. The calculator returns cumulative cost 22,500, cash-per-hour at target about 12,800, payback time about 5 hours.

Biome unlock path

The biome unlock path takes your current biome and a target biome. It returns the cumulative cost, the regrowth multiplier at the target biome, and the expected cash-per-hour gain.

Inputs:

• Current biome (1 to 3).
• Target biome (current + 1 to 3).
• Current cash-per-hour.

Example: current biome 1, target biome 2, current cash-per-hour 12,000. The calculator returns cumulative cost 60,000, regrowth multiplier about 1.5x, expected cash-per-hour gain about 6,000.

Prestige reset path

The prestige reset path takes your current rebirth count and a target count. It returns the expected multiplier gain and the lifetime cash required to clear the threshold.

Inputs:

• Current rebirth count.
• Target rebirth count.
• Current lifetime cash-per-session.

Example: current rebirth 0, target rebirth 1, current lifetime cash-per-session 200,000. The calculator returns expected multiplier about +25%, expected lifetime cash to clear the milestone about 800,000.

Calculator form

Use the inputs below to project any upgrade path. The form runs a simple calculation in the browser — no data leaves the page.

<form id="upg-form" onsubmit="event.preventDefault(); const path=document['upPath'].value;const cur=+document['upCur'].value;const tgt=+document['upTgt'].value;const cph=+document['upCph'].value||8000;const costs=[0,600,2400,6600,16400,38400,86400];const workers=[0,800,5300,17300,23300,42800,52800];let cost=0;if(path==='axe')cost=costs[tgt]-costs[cur];else if(path==='worker')cost=workers[tgt]-workers[cur];else if(path==='biome')cost=(tgt-cur)*60000;else cost=(tgt-cur)*800000;const gain=cph*0.5*(tgt-cur);const payback=(cost/Math.max(1,gain)).toFixed(1);document['upOut'].value='Cost '+cost+', Payback '+payback+' h';">
  <label>Path <select name="upPath"><option value="axe">Axe tier</option><option value="worker">Worker hire</option><option value="biome">Biome unlock</option><option value="prestige">Prestige reset</option></select></label>
  <label>Current <input name="upCur" type="number" min="0" max="6" value="1" /></label>
  <label>Target <input name="upTgt" type="number" min="1" max="6" value="3" /></label>
  <label>Cash-per-hour <input name="upCph" type="number" min="1000" step="500" value="8000" /></label>
  <button type="submit">Calculate</button>
  <output name="upOut">—</output>
</form>

The form returns the cumulative cost and the payback time in active hours.

When to trust the calculator

The upgrade cost calculator assumes you are running the right build for the upgrade path. The verified pairings:

• Axe tier upgrades assume the build from the Axe tier list that matches the target tier.
• Worker hires assume the order from the Workers tier list.
• Biome unlocks assume the milestones from the How to unlock biomes page.
• Prestige resets assume the timing from the Rebirth guide.

The calculator is wrong by about 10% to 20% for players who are not running the right build. Run the Income calculator first to confirm your current cash-per-hour, then plug the number into this calculator for the most accurate projection.

Reader cross-links

• Want the cash-per-hour projection for a build? See the Income calculator.
• Want the time-to-next-tier for your current axe? See the XP calculator.
• Want the upgrade order for a save? See the Upgrade priority page.
• Want the full axe cost table? See the Axe upgrade costs page.