I was never really good at math and my DM has given me a Haversack. But he warns me about over filling it. Below are the items and amounts that I would like to put in the bag. So how can I determine how much space these items will take up?
Ball Bearings (1000)...........X5
Candle.................................X5
Chain (10 ft)........................X1
Chalk .................................X10, (5 regular pieces and 5 ground into a powder and put into a pouch.) (To throw at suspected invisible entities)
Crowbar ,.............................X1
Grappling Hook...................X1
Ink (Vial).............................X5 (Again for the invisible entities or if i wanna write a note)
12 cubic feet translates to ~90 gallons. Look up a picture of a 90 gallon bathtub and try to visualize all your stuff fitting inside. I think your inventory looks fine right now, and could reasonably fit inside that space. Remember that the haversack has a weight limit in addition to the volume limit.
I think most DMs care more about preventing abuse than forcing you to draw out a Tetris diagram of everything fitting. Just try to stick to that bathtub visual and stay under your weight limit and you should be fine.
Keep in mind, anything more dense than water will fill up weight before volume; and most anything you put in the bag will be more dense than water.
Of what you have listed, only the playing cards, waterskins, and pouches are certainly less dense than water. The stakes and tinderbox could be, depending on composition (specific wood for the stakes, what wood or metal for the box).
Also understand that a human body takes up less than 3 cubic feet (due to gaps all around), and that most everything you would put in is not both solid and empty enough to fill volume first.
In case you and your DM need any guidance, try referring to the following chart. Keep in mind that anything with a density higher than 10 within said chart will fill up weight first.
... he warns me about over filling it. ... how can I determine how much space these items will take up? ...
The only time that density will be relevant is if you're stuffing it relatively airy materials like low-density clothing (or duvets). Otherwise, stick with weights.
You'll find the weights on the equipment list which should, at least typically, be listed in lbs.
If it helps the haversack's capacities cater for an average density of 10 lbs/ft³ or 160.18 kg/m³ = 0.16 kg/litre = 0.16 g/cm³
water has a density of a 62.24 lb/ft³ or 997 kg/m³ or approx 1kg/litre Food and most biological stuff has a similar density similar to water so you could fill the haversack with food and water etc to about a 6th of its volume. Steel has a density of 502.54508 lb/ft³ or 8,050 kg/mso you could fill 2% of your haversack's potential volume with steel. as a last, for me, reference, rock typically has densities between 156.0699 lb/ft³ and 187.28388 lb/ft³ or 2.5 g/cm³ and 3 g/cm³ so, perhaps, you could fill about 6.4% of your haversack's potential volume with rock.
It is easier to do it by weight. Central section holds 80 lbs, the two side packets hold 20 lbs each. Total weight capacity is 120 lbs, which is about as much as a good real backpack can hold. The real advantage is the weight reduction of the backpack. It does not really increase your capacity to carry all that much.
The PHB lists the weight of all you carry. Just add it up. By far the heaviest item you have is the portable ram. It weighs 35 lbs. Next is the 10ft chain, which weighs 10 lbs. The ten wooden stakes probably weigh about a lb each (like a torch). Portable ram goes in the center, along with the chain. The rest can probably be distributed as you desire.
By my rough guess, you should be able to carry everything you listed.
I was never really good at math and my DM has given me a Haversack. But he warns me about over filling it. Below are the items and amounts that I would like to put in the bag. So how can I determine how much space these items will take up?
Ball Bearings (1000)...........X5
Candle.................................X5
Chain (10 ft)........................X1
Chalk .................................X10, (5 regular pieces and 5 ground into a powder and put into a pouch.) (To throw at suspected invisible entities)
Crowbar ,.............................X1
Grappling Hook...................X1
Ink (Vial).............................X5 (Again for the invisible entities or if i wanna write a note)
Lantern, (Hooded)..............X1
Magnifying Glass..............X1
Manacles...........................X1
Mirror, (Steel).....................X2
Oil, (Flasks).........................X5
Playing Cards,....................X1
Pouch..................................X3
Portable Ram.....................X1
Rope (Silken 50 ft)............X2
Shovel (Collapsable).......X1
Soap................................X2
Spikes (Iron)....................X10
Spyglass............................X1
Stakes (Wooden)..............X10
Tinder Box..........................X1
Waterskin..........................X2
Ask your DM. If your DM wants you to track volume rather than weight, ask your DM how much volume each object takes up.
12 cubic feet translates to ~90 gallons. Look up a picture of a 90 gallon bathtub and try to visualize all your stuff fitting inside. I think your inventory looks fine right now, and could reasonably fit inside that space. Remember that the haversack has a weight limit in addition to the volume limit.
I think most DMs care more about preventing abuse than forcing you to draw out a Tetris diagram of everything fitting. Just try to stick to that bathtub visual and stay under your weight limit and you should be fine.
Keep in mind, anything more dense than water will fill up weight before volume; and most anything you put in the bag will be more dense than water.
Of what you have listed, only the playing cards, waterskins, and pouches are certainly less dense than water. The stakes and tinderbox could be, depending on composition (specific wood for the stakes, what wood or metal for the box).
Also understand that a human body takes up less than 3 cubic feet (due to gaps all around), and that most everything you would put in is not both solid and empty enough to fill volume first.
In case you and your DM need any guidance, try referring to the following chart. Keep in mind that anything with a density higher than 10 within said chart will fill up weight first.
https://www.engineeringtoolbox.com/density-materials-d_1652.html
The only time that density will be relevant is if you're stuffing it relatively airy materials like low-density clothing (or duvets). Otherwise, stick with weights.
You'll find the weights on the equipment list which should, at least typically, be listed in lbs.
If it helps the haversack's capacities cater for an average density of 10 lbs/ft³ or 160.18 kg/m³ = 0.16 kg/litre = 0.16 g/cm³
water has a density of a 62.24 lb/ft³ or 997 kg/m³ or approx 1kg/litre
Food and most biological stuff has a similar density similar to water so you could fill the haversack with food and water etc to about a 6th of its volume.
Steel has a density of 502.54508 lb/ft³ or 8,050 kg/m so you could fill 2% of your haversack's potential volume with steel.
as a last, for me, reference, rock typically has densities between 156.0699 lb/ft³ and 187.28388 lb/ft³ or 2.5 g/cm³ and 3 g/cm³ so, perhaps, you could fill about 6.4% of your haversack's potential volume with rock.
It is easier to do it by weight. Central section holds 80 lbs, the two side packets hold 20 lbs each. Total weight capacity is 120 lbs, which is about as much as a good real backpack can hold. The real advantage is the weight reduction of the backpack. It does not really increase your capacity to carry all that much.
The PHB lists the weight of all you carry. Just add it up. By far the heaviest item you have is the portable ram. It weighs 35 lbs. Next is the 10ft chain, which weighs 10 lbs. The ten wooden stakes probably weigh about a lb each (like a torch). Portable ram goes in the center, along with the chain. The rest can probably be distributed as you desire.
By my rough guess, you should be able to carry everything you listed.